A reputed gang member was sentenced Thursday to 70 years to life in state prison for the fatal stabbing of a 17-year-old Newark high school student and football star Justice Afoa and attempting to murder his girlfriend and her unborn child.

A 19-year-old Fremont man was sentenced Friday to 16 years to life in state prison for fatally stabbing 18-year-old Newark Memorial High School football star Osana Futi in April 2012 in what a prosecutor alleged was a gang-related incident.

A fourth suspect has been arrested and charged in connection with the fatal stabbing of 17-year-old Newark high school student and football star Justice Afoa two years ago in what authorities said was an act of revenge.